COLORADO BOTANY 69 



Greene; Crepis gracilis (Eat.) Rydb.; Lobelia cardinalis L., Hydro phylliimvirginicum 

 L., Adenostegia ramosa (Nutt.) Greene; Ligusticum filicinum Wats., Gentiana 

 calycosa Griesb., Thalesia uniflora (L.) Britt., Spiesia gracilis A. Nels., Astragalus 

 lotifiorus, Hook.; Saxifraga caespitosa L., Ribes cynosbati L., Petrophyton caespitosum 

 (Nutt.) Rydb., Hutchinsia procumbens (L.) Desf., Cardamine umbellata Greene; 

 Thelypodium nuttallii Wats., Arabis rugocarpa Osterhout.] 



Osterhout, George E., "Nuttall and Pursh and Some Early Spring Flowers of Colo- 

 rado," Plant World, Vol. X, No. 4, April, 1907. 



Paddock, Wendell, Professor of horticulture, Colorado Agricultural College. Address: 

 Ft. Collins, Colo. 



Paddock, Wendell, "Plant Diseases of 1901," Bull. No. 69, Colo. Agricultural College 

 Exper. Sta., pp. 1-23, 1902. 



, "Large Potato Vines and No Potatoes," Bull. Q2, Colo. Agricultural College Exper. 



Sta., pp. 1-8, 1904. [This bulletin contains a condensed account of work with potato 

 diseases.] 



Paddock, W., and Rolfs, F. M., "Potato Failures," Bull. No. 64, Colo. Agricultural 

 College Exper. Sta., pp. 21-23, i9°i- [A record of experiments with potato fungus 

 and a formula for treating diseased seed potatoes.] 



Pammel, L. H., "Some Diseases of Rocky Mountain Plants," Iowa Academy of Sciences 

 [reprint without volume number or date]. 



, "Dr. Edwin James," Annals of Iowa, Vol. VIII, pp. 161-85 and 277-95. [A 



brief biographical sketch.] 



, "What the United States Government Is Doing for Forestry," Proceedings of Iowa 



Park and Forestry Association, pp. 57-70. Ames, Iowa, 1901. [Discusses some of 

 the forest reserves of Colorado.] 



Pammel, L. H., and Lamson, Scribner F., "Some Notes on Grasses Collected in 1895 

 between Jefferson, Iowa, and Denver, Colo.," Proc. Soc. Prom. Agri. Sci., Vol. XVII, 

 pp. 94-104, 1896. 



Parry, C. C. Collected in 1861 and various years as late as 1872 in different parts of 

 Colorado. 



Parry, C. C, "Catalogue of Plants," 4th Ann. Report U. S. Geol. Survey (Hayden 

 Survey), pp. 484-87. [A list of plants collected by C. Thomas in eastern Colorado and 

 northeastern New Mexico, during the survey of 1869.] 



Parsons, Geo. H., "The Climate of Colorado and Its Effects upon Trees," Dept. Agr. 

 Forestry Div. Bull. No. 2, 2d ed., pp. 221-36, 1889. 



Patterson, H. N. Made collections on Gray's Peak and elsewhere through central Colo- 

 rado, 1885 and as late as 1892. 



Payne, J. E., "The Russian Thistle as Forage," Bull. No. 64, Colo. Agricultural College 

 Exper. Sta., pp. 15-17, 1901. 



Peck, Charles H., "Fungi," in Porter and Coulter, Synopsis of the Flora of Colorado, 

 pp. 163-64, 1874. 



, "New Colorado Fungi," Bot. Gazette, April, 1878. 



Penard, E. This distinguished student of Protozoa spent some time in Boulder, Colo., 

 in 1891 as the guest of the late Professor John Gardiner. See below. 



Penard, E., "An Enumeration of the Plants Collected by M. E. Penard in Colorado 

 during the Summer of 1892" (should have been 1891), Contributions from the Her- 

 barium of Columbia College, No. 75. 



